WO2022114087A1

WO2022114087A1 - Speaker and speaker attachment structure

Info

Publication number: WO2022114087A1
Application number: PCT/JP2021/043292
Authority: WO
Inventors: 暁典松永; 博文小野原; 友久吉田
Original assignee: フォスター電機株式会社
Priority date: 2020-11-30
Filing date: 2021-11-25
Publication date: 2022-06-02
Also published as: CN116569561A; JPWO2022114087A1

Abstract

This speaker comprises a speaker unit and a holding member holding the speaker unit. The holding member is formed from an elastic material, and has a holding portion holding the speaker unit and an attachment portion provided in one piece with the holding portion and secured to a rear case.

Description

Speaker and speaker mounting structure

This disclosure This disclosure relates to a speaker and a speaker mounting structure.

Japanese Patent Application Laid-Open No. 2005-20292 discloses a speaker device in which a speaker unit is attached to a door inner panel (mounting target) of a vehicle. In this speaker device, the insulator that attaches the frame of the speaker unit to the door inner panel is provided with an elastic member, and the elastic member absorbs the vibration transmitted from the speaker unit to the door inner panel. As a result, it is configured to suppress the emission of unnecessary sounds such as so-called "chattering sound" from the door inner panel due to the vibration of the speaker unit.

However, the technique described in Japanese Patent Application Laid-Open No. 2005-20292 requires elastic members as many as the number of insulators, so that there is a problem that the number of parts increases and the assembly work becomes complicated.

The present disclosure In consideration of the above problems, the present disclosure can suppress the emission of unnecessary sound due to the vibration transmitted from the speaker, and can simplify the work of assembling the speaker to the mounting target. The purpose is to provide.

The speaker according to the first aspect is a speaker including a speaker unit and a holding member for holding the speaker unit, and the holding member is made of an elastic material and holds the speaker unit. It has a portion and a mounting portion that is provided integrally with the holding portion and is fixed to the mounting target.

According to the first aspect, the speaker includes a holding member formed of an elastic material and a speaker unit held by the holding member. The holding member has a holding portion for holding the speaker unit and a mounting portion provided integrally with the holding portion and fixed to the mounting target. That is, the speaker unit is configured to be fixed to the mounting target via a mounting portion made of an elastic material. As a result, the vibration of the speaker unit is absorbed by the mounting portion, so that the vibration is less likely to be propagated to the mounting target. As a result, it is possible to suppress the emission of unnecessary sound from the mounting target due to the vibration transmitted from the speaker unit. Further, by integrally providing the mounting portion and the holding portion, the number of parts can be reduced and the assembly work of the speaker to the mounting target can be simplified.

The speaker according to the second aspect has an enclosure portion that surrounds the back surface of the speaker unit in the configuration according to the first aspect.

According to the second aspect, the back surface of the speaker unit is surrounded by an enclosure portion. As a result, the holding member constitutes a so-called "sealed" enclosure. In such a closed type enclosure, the internal volume of the rear space (back chamber) of the speaker unit can be arbitrarily set according to the size and shape of the enclosure portion, and the acoustic characteristics of the speaker can be adjusted. Therefore, the adjustment of the acoustic characteristics can be completed at the design stage of the speaker, and the trouble of adjusting the acoustic characteristics on the mounting target side can be saved.

The speaker according to the third aspect has a rectangular groove for holding the outer peripheral portion of the speaker unit in the holding portion in the configuration described in the first aspect or the second aspect.

According to the third aspect, the outer peripheral portion of the speaker unit is held by a rectangular groove formed in the holding portion. Here, since the holding portion of this embodiment is made of an elastic material, the side surface of the rectangular groove can be brought into close contact with the outer peripheral portion of the speaker unit by utilizing the elastic restoring force of the holding portion. Therefore, the airtightness between the holding portion and the speaker unit can be ensured, and the deterioration of sound pressure and sound quality due to air leakage can be suppressed.

In the speaker according to the fourth aspect, in the configuration described in the third aspect, a linear protrusion is formed on the side surface of the rectangular groove so as to project toward the outer peripheral portion, and the holding portion is the holding portion. It is in close contact with the outer peripheral portion via a linear protrusion.

According to the fourth aspect, by providing a linear protrusion projecting from the side surface of the rectangular groove toward the outer peripheral portion of the speaker unit, a part of the side surface of the rectangular groove is positively directed to the outer peripheral portion of the speaker unit. Can be brought into close contact. Thereby, the airtightness between the holding portion and the speaker unit can be surely obtained.

In the configuration according to any one of the first to fourth aspects, the speaker according to the fifth aspect is fixed to the mounting portion by inserting it into a mounting hole formed in the mounting target. A fixed portion is provided integrally.

According to the fifth aspect, the holding member is fixed to the mounting target by inserting the fixing portion integrally provided in the mounting portion into the mounting hole of the mounting target. As a result, since a tool such as a screwdriver is not required to fix the holding member to the mounting target, the work of assembling the speaker to the mounting target can be further simplified.

The speaker mounting structure according to the sixth aspect is a speaker mounting structure for mounting the speaker according to any one of the first to fourth aspects to the mounting target, and is accommodated in the mounting target. A recess is formed, and the holding member is fitted to the housing recess and the mounting portion is fixed to the mounting target.

According to the sixth aspect, the holding member of the speaker is fixed to the mounting target in a state of being fitted in the accommodating recess formed in the mounting target. As a result, the unevenness of the surface of the mounting target can be reduced, and the speaker can be prevented from interfering with the peripheral members of the mounting target.

According to the present disclosure, there is provided a speaker and a speaker mounting structure capable of suppressing the emission of unnecessary sound due to vibration transmitted from the speaker and simplifying the work of assembling the speaker to the mounting target. can do.

It is sectional drawing which shows the whole structure which attached the speaker which concerns on this embodiment to the attachment object. It is an exploded perspective view of the speaker which concerns on this embodiment. (A) is a cross-sectional view showing a state before the speaker unit according to the present embodiment is assembled to the holding member, and (B) is a cross-sectional view showing a state in which the speaker unit is assembled to the holding member and held by the holding member. be. It is a figure which shows the modification of the holding member which concerns on this embodiment. It is a figure which shows the modification of the holding member which concerns on this embodiment.

Hereinafter, the speaker 1 according to the present embodiment will be described with reference to FIGS. 1 to 5. As an example, the speaker 1 is mounted on a meter device 2 mounted on a vehicle. In FIG. 1, for convenience of explanation, the front side of the device facing the interior of the vehicle is indicated by an arrow FR, and the upper side of the device is indicated by an arrow UP. Further, the same reference numerals are given to the same or equivalent components and parts in each drawing.

(overall structure)
As shown in FIG. 1, the meter device 2 is installed in an instrument panel arranged in front of the driver in the interior of a vehicle (not shown). Further, the meter device 2 has a case 10 in which the meter board 3 is housed. The case 10 is formed in a box shape flat in the front-rear direction as a whole, and has a meter case 12 that partitions the internal space back and forth. A front case 14 is provided on the front side of the meter case 12, and a front space F is formed between the meter case 12 and the front case 14. Further, a rear case 16 is provided on the rear side of the meter case 12, and a rear space R is formed between the meter case 12 and the rear case 16.

The meter case 12 is formed in a box shape that is open to the rear side, and has a front vertical wall portion 12A having a plate thickness direction in the front-rear direction and a side wall erected from the peripheral edge of the front vertical wall portion 12A to the rear side. It has a portion 12B. A meter display unit 13 for displaying the measured values of various measuring devices mounted on the vehicle is formed on the front side (rear side of the vehicle) of the front vertical wall portion 12A. The meter display unit 13 is configured to be visible to occupants in the vehicle interior through a transparent window unit 14A provided on the front case 14.

On the other hand, a substrate support portion 12C is provided inside the side wall portion 12B of the meter case 12, and the substrate support portion 12C supports the meter substrate 3. A control device (not shown) that receives signals from various measuring devices mounted on the vehicle is mounted on the mounting surface on the front side of the meter board 3. On the other hand, the mounting surface on the rear side of the meter board 3 is arranged so as to face the speaker 1 described later, and the wiring 4 extending from the speaker 1 is connected to the mounting surface via the connector 5. Electronic components necessary for controlling the speaker 1 are mounted on the mounting surface of the meter board 3 to which the connector 5 is connected.

The rear case 16 is formed in a box shape open to the front side, and has a rear vertical wall portion 16A having a plate thickness direction in the front-rear direction and a side wall erected from the peripheral edge of the rear vertical wall portion 16A to the front side. It has a portion 16B. The rear vertical wall portion 16A is formed with a housing recess 18 recessed inside the rear case 16. Further, a substantially circular opening 19 is provided in the center of the accommodating recess 18. A holding member 30, which will be described later, is fitted into the accommodating recess 18 while holding the speaker unit 20 inside. Further, in this state, the holding member 30 does not protrude from the surface of the rear case 16. Hereinafter, the speaker 1 will be described in detail.

(Speaker)
FIG. 2 shows an exploded perspective view of the speaker 1. As shown in FIG. 2, the speaker 1 includes a speaker unit 20 that outputs an acoustic signal (sound wave) by vibrating the diaphragm 26, and a holding member 30 that holds the speaker unit 20. .. The speaker 1 of the present embodiment is attached to the meter device 2 in a posture in which the front surface 20A of the speaker unit 20 is arranged facing the rear side of the meter device 2 (see FIG. 1).

(Speaker unit)
The speaker unit 20 has a main body portion 22 provided with a diaphragm 26 and a front cover 24 mounted on the main body portion 22.

The main body 22 is configured to include a diaphragm 26 and a magnetic circuit (not shown), and a diaphragm 26 and a frame 28 supporting the magnetic circuit are attached to the back side of the diaphragm 26. The diaphragm 26 is arranged on the front surface of the main body 22 (on the front surface 20A side of the speaker unit 20). Further, the frame 28 is arranged on the back surface of the main body 22 (the back surface 20B side of the speaker unit 20).

The front cover 24 includes a front surface portion 24A that covers the front surface of the main body portion 22, and a side surface portion 24B that covers the radial outer side surface of the main body portion 22. The front cover 24 is made of resin as an example. The front surface portion 24A is formed in a circular plate shape with the axial direction (amplitude direction) of the speaker 1 as the plate thickness direction, and is arranged so as to face the front surface of the main body portion 22. A plurality of through holes 40 are formed in the front surface portion 24A, and the inside and outside of the front cover 24 are communicated with each other through these through holes 40. The side surface portion 24B is erected on the back side of the main body portion 22 from the peripheral edge of the front surface portion 24A. The side surface portion 24B is fitted to the outer peripheral portion of the main body portion 22 by a fitting claw (not shown) formed on the inner peripheral surface.

As described above, as shown in FIG. 3A, the speaker unit 20 is housed in the holding member 30 described later after the main body portion 22 and the front cover 24 are integrated in advance (FIG. 3B). reference). The front cover 24 is not essential to the speaker unit 20, and the speaker unit may be configured not to have a front cover.

(Holding member)
The holding member 30 is made of an elastic material, and the holding portion 32, the mounting portion 34, and the enclosure portion 36 are integrally formed. The holding member 30 holds the speaker unit 20 and constitutes a so-called enclosure of the speaker 1.

As shown in FIGS. 1 and 3, the holding portion 32 of the holding member 30 has a function of holding the outer peripheral portion of the speaker unit 20. Specifically, the holding portion 32 is formed in a cylindrical shape surrounding the outer peripheral portion of the speaker unit 20, and a rectangular groove 42 opened inward in the radial direction is formed on the inner peripheral surface of the holding portion 32. Has been done. The rectangular groove 42 is composed of a vertical side surface 32A facing the side surface of the front cover 24, a front side surface 32B extending radially inward from the front end of the vertical side surface 32A, and a rear side surface 32C extending radially inward from the rear end. There is. In the holding portion 32, the outer peripheral portion of the front cover 24 is fitted inside the rectangular groove 42 to be held. The front end of the vertical side surface 32A indicates the front end of the speaker unit 20 on the vertical side surface 32A, and the rear end of the vertical side surface 32A indicates the rear end of the speaker unit 20 on the vertical side surface 32A. ing.

Further, the vertical side surface 32A of the rectangular groove 42 is provided with a linear protrusion 50 for enhancing the airtightness between the holding portion 32 and the speaker unit 20. The linear protrusion 50 is formed in an annular shape along the circumferential direction of the holding portion 32, and is formed in a triangular shape protruding toward the side surface portion 24B (outer peripheral portion) of the front cover 24. In the present embodiment, a plurality of linear protrusions 50 are provided along the axial direction of the holding portion 32.

As shown in FIG. 3A, in the tip portion of the linear protrusion 50, the inner diameter of the holding portion 32 is formed to be slightly smaller than the outer diameter of the side surface portion 24B (outer diameter of the front cover 24). As a result, when the outer peripheral portion of the front cover 24 is accommodated inside the rectangular groove 42, the tip of the linear protrusion 50 is elastically deformed and crushed, and is brought into close contact with the side surface portion 24B of the front cover 24. As shown in FIG. 3B, the linear protrusion 50 is in close contact with the entire circumference of the side surface portion 24B, so that a gap is not formed between the front cover 24 and the holding portion 32, and the state is sealed. Become. As a result, it is possible to prevent air leakage from occurring between the outer peripheral portion of the front cover 24 and the holding member 30.

In the present embodiment, the linear protrusion 50 is provided on the vertical side surface 32A of the rectangular groove 42, but when the linear protrusion 50 is provided, the linear protrusion 50 is provided along the entire circumference of the outer peripheral portion of the front cover 24. The 50s may be arranged so as to be in close contact with each other. Therefore, as shown in FIG. 4, the linear projection 50 may be provided on the front side surface 32B of the rectangular groove 42. The linear protrusion 50 shown in FIG. 4 is provided in an annular shape over the entire circumference of the front side surface 32B, and is formed in a triangular shape protruding toward the front surface portion 24A of the front cover 24. When the outer peripheral portion of the front cover 24 is housed inside the rectangular groove 42, the linear protrusion 50 is in close contact with the front portion 24A of the front cover 24. Further, from the same viewpoint as in FIG. 4, the linear protrusion 50 may be provided on the rear side surface 32C of the rectangular groove 42.

As shown in FIG. 2, the mounting portion 34 of the holding member 30 is composed of a plate-shaped portion extending radially outward from the outer surface of the holding portion 32. A plurality (three in this embodiment) of the mounting portions 34 are provided along the circumferential direction of the holding portion 32 with the axial direction of the holding portion 32 as the plate thickness direction. The mounting portion 34 is mounted in the accommodating recess 18 of the rear case 16 in a state where the holding member 30 is mounted on the rear case 16 (see FIG. 1).

Further, on the lower surface of the mounting portion 34, a fixing portion 60 projecting toward the back surface 20B side of the speaker unit 20 is provided. The fixing portion 60 is provided integrally with the mounting portion 34 and is made of an elastic material. The fixing portion 60 has a columnar pillar portion 60A and a hook portion 60B provided on the tip end side of the pillar portion 60A and projecting radially outward of the pillar portion 60A. The hook portion 60B is formed in a truncated cone shape whose diameter is reduced toward the tip. Further, the mounting portion 34 is formed with a through hole 61 penetrating from the front surface side of the mounting portion 34 to the tip end side of the fixing portion 60.

As shown in FIG. 1, a mounting hole 44 corresponding to the fixing portion 60 of the holding member 30 is formed in the accommodating recess 18 of the rear case 16. The inner diameter of the mounting hole 44 is formed to have substantially the same size as the outer diameter of the pillar portion 60A of the fixing portion 60. On the other hand, the inner diameter of the mounting hole 44 is formed to be smaller than the outer diameter of the hook portion 60B on the proximal end side. Further, the inner diameter of the mounting hole 44 is formed to be larger than the outer diameter on the tip end side of the hook portion 60B. As a result, the tip end side of the hook portion 60B can be inserted into the mounting hole 44 of the accommodating recess 18 for easy alignment. Then, by pressing the mounting portion 34 from the rear side of the rear case 16 toward the accommodating recess 18 side, the base end side of the hook portion 60B can be elastically deformed and inserted into the mounting hole 44. When the entire hook portion 60B passes through the mounting hole 44, the pillar portion 60A is inserted into the mounting hole 44, and the hook portion 60B elastically returns and is locked to the peripheral edge of the mounting hole 44. By inserting the fixing portion 60 into the mounting hole 44 in this way, the mounting portion 34 can be fixed to the rear case 16. As a result, the speaker unit 20 is fixed to the rear case 16 via the mounting portion 34.

According to the above configuration, the holding member 30 functions as a vibration absorbing member that absorbs the vibration propagated from the speaker unit 20. That is, by fixing the speaker unit 20 and the rear case 16 via the mounting portion 34 formed of the elastic material, the vibration transmitted from the speaker unit 20 can be absorbed by the mounting portion 34. The holding member 30 is preferably a softer member than the frame 28 and the front cover 24 of the speaker unit 20 in terms of enhancing the function of the holding member 30 as a vibration absorbing member. In the present embodiment, as an example, the holding member 30 is formed of an elastic material such as EPDM (ethylene propylene diene rubber), CR (neoprene rubber), Si (silicon rubber), and the frame 28 and front cover 24 of the speaker unit 20 are formed. May be formed of a hard plastic such as ABS or PBT.

In the present embodiment, the fixing portion 60 is integrally provided on the mounting portion 34, but the fixing portion 60 may not be provided on the mounting portion 34. In this case, as shown in FIG. 5, the mounting portion 34 may be fixed to the rear case 16 by using the screws 70. The mounting portion 34 shown in FIG. 5 is formed with a through hole 72 corresponding to the mounting hole 44 formed in the accommodating recess 18 of the rear case 16. The screw 70 may be screwed and fastened to a bolt (not shown) in a state of being inserted into the through hole 72 of the mounting portion 34 and the mounting hole 44 of the rear case 16. Alternatively, the mounting hole 44 of the rear case 16 may be used as a screw hole, and the screw 70 may be screwed and fastened to the mounting hole 44.

On the other hand, as shown in FIG. 3B, the enclosure portion 36 of the holding member 30 is formed in a box shape surrounding the back surface 20B of the speaker unit 20, and the sound emitted from the back surface 20B of the speaker unit 20 is emitted from the speaker unit 20. It has a function to separate it from the sound emitted from the front surface 20A. Specifically, the enclosure portion 36 has a front surface 20A of the speaker unit 20 by a bottom wall portion 36B connecting the peripheral wall portion 36A extending from the rear end of the holding portion 32 to the rear end side of the speaker unit 20 and the rear end of the peripheral wall portion 36A. It is formed in a bottomed cylindrical shape that is open to the side. An insertion hole 46 is formed in the center of the bottom wall portion 36B through which the wiring 4 of the speaker unit 20 is inserted and extends to the meter substrate 3 side (see FIG. 1). Since the insertion hole 46 is formed to be sufficiently smaller than the area of the bottom wall portion 36B, inside the enclosure portion 36, a space portion S close to a closed space is provided on the back surface 20B side of the speaker unit 20. It is formed. In other words, the internal space of the enclosure portion 36 constitutes the rear space (back cavity) of the speaker unit 20. In FIGS. 2 and 3, the insertion hole 46 formed in the enclosure portion 36 is omitted.

In the enclosure unit 36, the sound emitted from the back surface 20B of the speaker unit 20 can be confined inside and separated from the sound emitted from the front surface 20A of the speaker unit 20. Therefore, it is possible to suppress the sound emitted from the front surface 20A and the sound emitted from the rear surface 20B of the speaker unit 20 from interfering with each other and canceling each other, which is advantageous for correct reproduction of the bass range.

Further, the acoustic characteristics of the speaker 1 can be adjusted by adjusting the internal volume of the rear space (back cavity) of the speaker unit 20 according to the dimensions and shape of the enclosure portion 36. That is, in the present embodiment, since the adjustment of the acoustic characteristics of the speaker 1 can be completed at the design stage of the speaker 1, a complicated structure for adjusting the acoustic characteristics is not required on the mounting target side. Therefore, there is an advantage that it is possible to save the trouble of adjusting the acoustic characteristics on the side to be mounted on which the speaker 1 is mounted.

By increasing the inner diameter of the insertion hole 46, the back pressure of the diaphragm 26 may be released to the rear space R of the case 10 through the insertion hole 46. On the contrary, when improving the airtightness inside the enclosure portion 36, the insertion hole 46 may be covered with a sealing material or the like. The position of the insertion hole 46 is not limited to the center of the bottom wall portion 36B, but may be formed in the peripheral wall portion 36A or the like. When the insertion hole 46 is formed in the peripheral wall portion 36A, the wiring 4 of the speaker unit 20 can be pulled out from the side surface of the holding member 30 and connected to the meter board 3. The connection portion between the connector 5 of the wiring 4 and the meter board 3 may be arranged inside the case 10, but when the connector 5 of the wiring 4 is connected to the end portion of the meter board 3, the connector 5 is used. The connection portion with the case 10 may be exposed to the outside of the case 10. When the connection portion with the connector 5 is exposed to the outside of the case 10, the connection work between the meter board 3 and the connector 5 can be performed after the speaker 1 is attached, so that the degree of freedom in the assembly work process is increased. It is advantageous in terms of enhancing.

(Action and effect)
As described above, in the speaker 1 according to the present embodiment, the speaker unit 20 and the rear case 16 (case 10) to be mounted are fixed via the mounting portion 34 made of an elastic material. As a result, the vibration of the speaker unit 20 is absorbed by the mounting portion 34, so that the vibration is less likely to be propagated to the mounting target. As a result, it is possible to suppress the emission of unnecessary sound from the rear case 16 due to the vibration transmitted from the speaker unit 20. Further, by integrally providing the mounting portion 34 and the holding portion 32, the number of parts can be reduced and the assembly work of the speaker 1 to the case 10 can be simplified.

Further, as shown in FIGS. 3A and 3B, by forming the holding portion 32 with an elastic material, the holding portion 32 is elastically deformed while the outer peripheral portion of the speaker unit 20 is held. Can be held in. As a result, no adhesive is required to hold the speaker unit 20 in the holding portion 32. In this respect as well, the assembly work can be simplified.

In the present embodiment, the back surface 20B of the speaker unit 20 is surrounded by the enclosure portion 36. That is, the holding member 30 of the present embodiment constitutes a so-called "sealed" enclosure. Thereby, the internal volume of the rear space (back chamber) of the speaker unit 20 can be arbitrarily set according to the size and shape of the enclosure portion 36, and the acoustic characteristics of the speaker 1 can be adjusted. Therefore, the adjustment of the acoustic characteristics can be completed at the design stage of the speaker 1, and the trouble of adjusting the acoustic characteristics on the side of the case 10 to be attached can be saved.

Further, in the present embodiment, the outer peripheral portion of the speaker unit 20 is held by the rectangular groove 42 formed in the holding portion 32. Here, since the holding portion 32 is made of an elastic material, the side surface of the rectangular groove 42 can be brought into close contact with the outer peripheral portion of the speaker unit 20 by utilizing the elastic restoring force of the holding portion 32. Therefore, the airtightness between the holding portion 32 and the speaker unit 20 can be ensured, and deterioration of sound pressure and sound quality due to air leakage can be suppressed.

Further, on the side surface of the rectangular groove 42, a linear protrusion 50 projecting toward the outer peripheral portion of the speaker unit 20 is formed. As a result, a part of the side surface of the rectangular groove 42 can be positively brought into close contact with the outer peripheral portion of the speaker unit 20. As a result, the airtightness between the holding portion 32 and the speaker unit 20 can be reliably obtained.

Further, the holding member 30 of the present embodiment is configured to be fixed to the case 10 by inserting the fixing portion 60 provided integrally with the mounting portion 34 into the mounting hole 44 of the rear case 16. As a result, since a tool such as a screwdriver is not required to fix the holding member 30 to the case 10, the work of assembling the speaker to the mounting target can be further simplified.

Further, the rear case 16 is provided with a storage recess 18 into which the holding member 30 and the speaker unit 20 are fitted. The holding member 30 fixes the mounting portion 34 to the rear case 16 in a state of being fitted in the accommodating recess 18. As a result, the unevenness of the surface of the rear case 16 can be reduced, and the speaker unit 20 can be prevented from interfering with the peripheral members of the meter device 2.

[supplementary explanation]
Although an example of the embodiment of the present disclosure has been described above, the present disclosure can be appropriately modified without departing from the gist of the invention, and the configuration of the above embodiment and each modification can be omitted, replaced, or modified. It can be performed.

For example, in the above embodiment and each modification, the speaker unit 20 is configured to include the front cover 24, but the present disclosure is not limited to this, and the present disclosure can be applied to the speaker unit not provided with the front cover 24. .. In this case, the outer peripheral portion of the main body portion 22 of the above embodiment, that is, the outer frame portion of the frame 28 becomes the outer peripheral portion of the speaker unit and is held by the holding portion 32.

Further, in the above embodiment, the holding member 30 constitutes the enclosure of the speaker 1, but the present disclosure is not limited to this. For example, the holding member may be configured with a front cover that covers the front surface of the speaker unit, and the holding portion and the mounting portion may be integrally provided with respect to the front cover.

Further, the holding member may be composed of the holding portion 32 and the mounting portion 34 in the above embodiment, and may be configured not to include the enclosure portion 36. Further, in the above embodiment, the holding member 30 is a “sealed type” enclosure, but the present disclosure is not limited to this, and the so-called “rear surface open type” enclosure is obtained by removing the bottom wall portion 36B from the enclosure portion 36. The holding member constituting the above may be applied to the present disclosure. In addition, holding members constituting various enclosures such as a flat baffle type and a bass reflex type can be applied to the present disclosure.

Further, in the above embodiment, the linear protrusion 50 is configured in a triangular shape, but the present disclosure is not limited to this. The linear projection may be configured so that the outer peripheral portion of the speaker unit can be in line contact with each other, and a linear projection having a hemispherical cross section or a trapezoidal linear projection may be used. Further, the number of linear protrusions 50 can be appropriately set as needed, and may be one, or may be configured to have a plurality of linear protrusions as in the above embodiment. Further, the rectangular groove 42 may not be provided with the linear protrusion 50. However, by providing a plurality of linear protrusions, the airtightness between the holding portion and the speaker unit can be more reliably obtained.

In the above embodiment, the rear case 16 as an attachment target is configured to form an accommodation recess 18 for accommodating the holding member 30, but the present disclosure is not limited to this. A configuration may be configured in which only a substantially circular opening 19 is formed in the flat surface portion of the rear case 16.

Further, in the above embodiment, the speaker 1 is attached to the meter device 2 mounted on the vehicle, but the present disclosure is not limited to this. The mounting target of the speaker 1 can be changed as appropriate, and for example, the door inner panel of the vehicle, the pillar, or the roof may be mounted. Further, the case portion of various devices other than the vehicle may be attached.

The disclosure of Japanese Patent Application No. 2020-198974, filed November 30, 2020, is incorporated herein by reference in its entirety.
All documents, patent applications, and technical standards described herein are to the same extent as if the individual documents, patent applications, and technical standards were specifically and individually stated to be incorporated by reference. Incorporated by reference herein.

Claims

A speaker including a speaker unit and a holding member for holding the speaker unit.
The holding member is made of an elastic material, and has a holding portion for holding the speaker unit and a mounting portion integrally provided with the holding portion and fixed to a mounting target.
The speaker according to claim 1, wherein the holding member has an enclosure portion that surrounds the back surface of the speaker unit.
A rectangular groove for holding the outer peripheral portion of the speaker unit is formed in the holding portion.
The speaker according to claim 1 or 2.
According to claim 3, a linear protrusion is formed on the side surface of the rectangular groove so as to project toward the outer peripheral portion, and the holding portion is in close contact with the outer peripheral portion via the linear protrusion. The speaker described.
The speaker according to any one of claims 1 to 4, wherein the mounting portion is integrally provided with a fixing portion that is inserted and fixed through a mounting hole formed in the mounting target.
The speaker mounting structure for mounting the speaker according to any one of claims 1 to 5 to the mounting target.
A housing recess is formed in the mounting target.
The holding member is a speaker mounting structure in which the mounting portion is fixed to the mounting target in a state of being fitted in the housing recess.